We are recently have some problems with our main DirecTV receiver. We have a total of five HD-DVRs, mostly HR20s with one HR22. The main unit on our living room TV has been acting up lately and I have no idea what's going on. (All other units are displaying, recording fine ASFAIK.) We're getting lots (every minute or two) pixillation/break-ups (like big blocky fade outs that go to green on about half the screen). At first I thought maybe our external eSATA hard drive had gone bad, but it also happens watching live TV (sports). It occurs on every channel we've recorded on in say, the last week or so, and it's really annoying! I've checked our signal strength (on this unit) and it's in the high 80s or low to mid-90s for all relevant transponders/sats. I've checked the cables and they're tight at both the head end (multi-switch) and to the unit. Any other ideas what it might be? Could it still be the hard drive (by the way, this problem doesn't happen on older, saved recordings from the same drive)? Is the unit itself going bad? Any other ideas? Thanks, appreciate any suggestions!